Looks like good advice for newbs.
Here Are Five Performance Mods That Are Utterly Useless*

 

Driver mod is best mod.

 

****... These are like all of my mods...

 

My Yukon Denali was designed with 93 octane in mind by gmc.... People have run back to back dyno runs with 91 and 93...(in Texas) with no other changes. I can not remember the power change...but it was a nice little bump...all down low...it is 11:1 ish compression 6.2l v8

As for the other crap...it's all smile factors... Does it make you happy? If so, **** it...

I like the plastic brembo caliper covers and the spinner hub caps best myself!

 

stickers... Oh wait, Jourdan removed those.

 

It's kinda funny... The picture they post for springs...



A picture of the exact springs I have...